Late nite launch thread edition

Livestream: https://youtu.be/KU6KogxG5BE
Launch: Friday August 7 1:12 AM EDT / 5:12 UTC
Probability of violating weather constraints: 30% (https://www.patrick.af.mil/Portals/14/Weather/Falcon%209%20Starlink-L9%20L-1%20Forecast-%207%20Aug%20Launch.pdf?ver=2020-08-06-081917-397)
Backup launch: Saturday August 8 12:50 AM EDT / 4:50 UTC
Launch vehicle: SpaceX Falcon 9 with first stage B1051.5 (prior launches: Starlink-6, Starlink-3, RADARSAT, DM-1)
Launch pad: LC-39A, Kennedy Space Center, Florida, USA
Fairings: New?
Fairing recovery: Possible?
First stage landing: On droneship 'Of Course I Still Love You'

Payload: 57 SpaceX Starlink satellites & Spaceflight Industries Blacksky 5 + 6 satelites
Payload mass & destination orbit: ~15,600 kg (~260 kg / Starlink sat); 210 x 366 km @ ~53°; Starlink sats will eventually orbit-raise to 550 km
Starlink-L9 TLE: https://www.celestrak.com/NORAD/elements/supplemental/starlink-10.txt
>https://www.starlink.com
>https://www.spacex.com/launches/index.html
>https://space.skyrocket.de/doc_sdat/starlink-v1-0.htm
>https://space.skyrocket.de/doc_sdat/blacksky-global.htm
>https://www.wmo-sat.info/oscar/satellites/view/795
>https://en.wikipedia.org/wiki/Spaceflight_Industries#BlackSky

Launch viewing guide for Florida: http://www.launchphotography.com/Delta_4_Atlas_5_Falcon_9_Launch_Viewing.html
SpaceX twitter: https://twitter.com/SpaceX

This will be the 57th landed first stage, 38th re-flight of a first stage, and 90th Falcon 9 launch. It is the 12th SpaceX orbital launch of 2020.